Coking-oven.



Y PATENTED MAR. 12, 1907.

L. J. HIRT.

00111116 OVEN. AlfPLIOATION FILED JAvN. 3, 1903.

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'To @ZZ whom it may concern.'

" LOUIS -IIIRT,1OF BROOKLINE, IVIASSAOHUSETTS.v

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4Eipecizieatio'n of Letters Patent.

Patented March 12, 1907.

' Appunti@fiiannuary,1903. serial No. 137,639.

Be 1t known that I, LOUIS J. HIRT, acitizen of the United States, residing in Brookline, in the county of Norfolk and State of Massachusetts, have invented an Improvement in Coking-Ovens, of which the following description, in connection with the accompany- .ing drawings, is a specification, like letters on the drawings representing like parts.

rFhis'inventfon relates to coking-ovens of the class shown and described in United States Patent No. 679,749, granted to me August 6, 1901, and has for its object to pro-` vide the extension of the coking-chamber with efficient means whereby the hot coke may be supported while the cooler coke is being discharged from the said extension.

of the extension c. tion of the extension e is made of greater The invention further has for its obj ect to provide a'novel door for closing the discharge outlet or opening in the bottom ofthe extension.

These and other features of this invention will be pointed out in the claims at the end of this specification.`

The drawing represents in section and elevation a sufficient portion of a coking-oven embodying this invention to enable it to be understood.

Referring to the drawings, @represents the brickwork of a coking-oven, which may be rovided with a plurality of coking-chambers ZJ), substantially as 'shown and described in the patent referred to, the chamber b being provided with the metal extension c, which rojectsva considerable distance below the I- `fieams d, which support the oven. l

The metal 'extension c is provided with an intermediate portion having offsets e f, located substantially diametrically opposite each other and Within which osets are located rock-shafts g h, upon which arem'ounted a plurality of cranks or arms 'i7' of a length substantially equall to one-half the diameter The intermediate secwidth, so that the cranks or arms 7' lwhen occupying a verticall position havetheir front faces lsubstantially in line with the walls of l f the upper portion of the extension c, thereby affording an unobstructed or free passage for the colte located in the upper portion of the extension c into the lower portion of the same.

The rock-shafts g h are extended through the walls of the intermediate section of the extension c and are provided at one end with Worm-gears 7c Z, which mesh with worms m n v on a shaft o, having bearings in suitable supports p, attached at their up er ends to the supports for the I-beams d an at theirlower ends to the intermediate section of the extension. The shaft o may be provided with a suitable hand-wheel q. Y l

The lower portion of the extension c is provided with an open mouth normally closed by a door 5, havin annular flanges 6 7 on its upper face,'which orm a groove 8, into which the lower end of the extension c projects when the door 5 is closed. The groove 8 is adapted to receive water 28-to seal the discharge outlet or mouth of the extension c when the door is closed. The door 5 is mounted onl a pivotal support, shown as a bent armor lever 10, having its upright member pivoted at 12 to a lug or casting 13, attached to the outside of the lower portion of the extension c.

The horizontal portion of the lever 10 is connected'bythe pin 14 to lugs or ears 15, secured to or forming part of the under portion of the door. The door is held in its closed position by a suitable latch, shown as a lever 16, pivoted at 17 to a lug 18, attached to the outside of the lower portion of the extension c and having a hook-shaped end 19, adapted to extend under and be engaged by theA hooked end 20 of the supporting-lever 10. The latch 16 has pivoted to it a cam-lever 21, by which the door may be securely locked in its closed position and by turning which the latch may be disengaged from the door, so as to permit the latter to open by gravity.

lntermediate of the door 5 and the supporting fingers or arms i j the extension may be provided with a plurality of fingers 22, mounted on a rock-shaft 23 in an offset portion 24 of the lower end of the extension c, the said rock-shaft having on it outside of the extension the hand-wheel 25. The fingers 22 are adapted to be turned into a substantially horizontal position to act as a supplemental support for the coke being discharged Athrough the lower end .of the extension c. With the apparatus herein shown and described the cranks.' or arms fi j may be turned into a substantially horizontal position by rotation ofthe hand-wheel g, and when in this position they act as a support for the hot body of coke in the extension c above them and at such time permitting the door 5 to be opened in order to discharge the portion of the coke in the lower part of the extension c, which latter coke a cold or IOO IIO

substantially cold condition at such time. After the cooled coke has been' discharged from the lower portion oi' the extension c the door5 is again closed andthe hand-wheel g 4is rotated, so as to turn the supporting cranks or arms i j into a vsubstantially v ertical position, (represented in the draw1ng,)'

coke and allowing a small portion thereof tobe discharged when the door is opened. The purpose or this discharge is to lower the body or' coke in the oven, thereby enabling a porti'on of the charge in the oven to be Withdrawn a short time after the coking process is started, so as to make provision ior the expansion of the coke in the. oven.

I claiml y p 1. In a coking-oven, in combination, a coking-chamber provided with .an extension having atits lower end a discharge outlet or mouth, a cover to normally close said mouth, suppourting cranks or arms located within the extension above the-said inouth, rock-shafts upon which the said cranks or arms are mounted, worm-gears mounted on the said' rock-shaits outside of the said extension, and a rotatable shalt provided with worms in `mesh with said gears, 'substantially as described.

2. In a coking-oven, in combination, a cok,

ing-chambery provided with an extension having its lower portion of greater area than its upper portion',- rock-shafts supported in the portion of larger area on opposite side of the extension, cranks or arms attached to said rock-shai'ts and movable Atoward each other, means to operate said rock-shafts, a rock-shaft located below the first-mentioned rock-shaft and provided with cranks or arms, and means to operate said second rock-shaft, substantially as described.

In testimony whereof I have signed my name to this speci'iication in the presence of two subscribing witnesses.

LOUIS J. HIRT. Witnesses:

JAS. H. CHURCHILL, Y J`.MUR`1 HY. 

